Senior .NET Backend Engineer - Cloud-Native Microservices

CQUE; Kraków; Hybrid; PLN 190,000 - 270,000; Full time

Job summary

CQUE is seeking a Senior Backend Engineer to join our international engineering team building enterprise SaaS products. You’ll design, develop and maintain scalable backend services with C#/.NET 6+, implement microservices and RESTful APIs, and work with AWS in a cloud-native environment.

You will collaborate with Product Managers, Architects and Frontend Engineers, contribute to architectural decisions, and help raise engineering practices, testing, and deployment automation across the stack.

Qualifications

• 5+ years of professional backend software development experience.
• Experience with enterprise web applications or cloud-based SaaS platforms.
• Strong understanding of the full SDLC.
• Strong experience with C# / .NET 6+; ASP.NET MVC/Blazor.
• Entity Framework; SQL Server.
• RESTful APIs; Microservices; Distributed systems.
• Commercial experience with AWS and cloud-native development.
• Strong understanding of system design, scalability and performance engineering.

Responsibilities

• Design, develop and maintain high-performance backend services using C# and .NET
• Build secure and reliable RESTful APIs
• Design and implement microservice architectures
• Develop cloud-native applications using AWS
• Improve system performance, reliability, scalability and security
• Collaborate with Product Managers, Architects and Frontend Engineers
• Contribute to architecture discussions and technical design
• Participate in code reviews and promote engineering best practices
• Build automated unit, integration and end-to-end tests
• Contribute to CI/CD pipelines and deployment automation
• Investigate production issues and drive sustainable technical improvements
• Identify technical debt and help improve long-term system maintainability

Skills

C#

.NET 6+

ASP.NET MVC/Blazor

RESTful APIs

Microservices

SQL Server

Distributed systems

Cloud AWS

Event-driven architecture

Tools

Docker

Kubernetes

Terraform

GitHub Actions

TeamCity

Elasticsearch

Job description

CQUE is seeking a Senior Backend Engineer to join our international engineering team building enterprise SaaS products. You’ll design, develop and maintain scalable backend services with C#/.NET 6+, implement microservices and RESTful APIs, and work with AWS in a cloud-native environment.

You will collaborate with Product Managers, Architects and Frontend Engineers, contribute to architectural decisions, and help raise engineering practices, testing, and deployment automation across the stack.